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17" blanks, 16" cdk parts, 12.5" F4 mirror, carbon fiber tube For Sale

Price - $550.00

Ad Number: 165779

Posted: 19 Mar 2019

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We're cleaning out the parts bin...... you can pick up the parts or have them shipped.....

1) finished carbon fiber tube with tube rings and back plate, 35" long, 16" ID, .5" honeycomb core, high gloss finish, CNC machined backplate (can provide hole dimensions), cooling fans. Would make a great tube for a 14" Cass or a fast 14" Newt. Three dovetail plates mounted on tube (Losmandy D type). The tube alone would cost over $3k if new. $550 + shipping (will ship in a wooden crate, shipping will run around $375, can pick up if you prefer)

2) two 17.75" conical mirror blanks, cast by United Lens, high quality Supremax 33 borosilicate glass (like Pyrex), 6.25" diameter flat on the back, a 5.25" starter hole on the face of the blank about .25" deep, 2.45" thickness, .625" edge thickness, and a ROC of 110". Still new in box. Over $1200 each when new. $550 each + shipping (around $80).

3) Conical 12.5" F4 Ostahowski mirror, center spotted, carbon fiber base with threaded 1/4-20 holes for mounting, coating in very usable shape but not like new. $350 + shipping

4) Anyone interest in a fun ATM project? finished 16" conical primary, corrector, and secondary. Gordon Waite optics, finished 12years ago, been sitting on shelf collecting dust for 10 years. Primary is mounted in mirror cell, secondary mounted and baffled, carbon fiber tube with honeycomb core and Losmandy dovetail plate, spider, backplate. Almost everything needed to build a complete 16" F6.7 scope with a 50mm corrected FOV. Buyer will need to baffle primary mirror and find way to mount focuser, install cooling fans. The backplate has a threaded DSI3.5 female adapter mounted on it which can be used for a focuser base adapter. Everything CNC machined and anodized, 6061 aluminum. The coatings on the mirrors are decent and very usable, primary coating has a couple of hairline scratches, coatings on corrector are ok and very usable but definitely show some age. Tube has some scuffs and dust but overall in very good shape. One corrector lens element has a small clamshell crack at the edge. It looks like it is out of the light path. Will not part out. $2750 plus shipping (around $450)



  • Condition Used
  • Location Alabama

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